Lock and latch combined.



Patented Sept. 11, 1900..

(Application filed Dec. 11, 1898.)

2 Sheets$heet I.

(No Model.)

l/IIII/I/ I] m: Ncmms PETERS c0. vnmoumm vusmunwu, a c

No. 657,885. Patented Sept. ll, I900.

m. c. PATRICK.

LOCK AND LATCH COMBINED.

(Application filed Dec. 11, 1899.)

(No Model.) 2 Sheets'8heet 2.

Inventor je/larawflfatnkif, i W Z 30 0 UNrrED STATES PATENT ()Frien.

MARCUS C. PATRICK, OF SEA LE, WASHINGTON, ASSIGNOR OF ONE-HALF TO JAMESF. HOWIE, OF SAME PLACE.

LOCK AND LATCH COMBINED.

SPECIFICATION forming part of Letters Patent No. 657,885, datedSeptember 11, 1900.

Application filed December 11,1899. Serial No- 739.939. (No model.)

To aZZ whom it may concern.-

Be it known that I, MARCUS O. PATRICK, a citizen of the United States,residing at Seattle, in the county of King and State of WVashington,have invented new and useful Improvements in a Combined Lock and Latch,of which the following is a specification.

My invention relates to a combined lock and latch, and particularly tothat class in which the locking mechanism is inclosed within the knobsand operates to prevent the latter from being turned, whereby the latchcannot be retracted from the outside; and it has for its object toprovide a combined lock and latch r 5 of the character described whichwill be exceedingly simple and composed of few parts, and hence may bemanufactured at small cost, which can be easily and quickly assembledtogether and placed in position on a door, and

which will be reliable and certain in operation and not apt to get outof order.

To these ends my invention consists in the features and in theconstruction,combination, and arrangement of parts hereinafterdescribed, and particularly pointed out in the claims following thespecification, reference being had to the accompanying drawings, forminga part of this specification, wherein- Figure 1 is a central sectionalview of my 0 improved lock. Fig. 2 is a similar View of the latch. Fig.3 is an end View illustrating the manner in which the parts are fastenedin place. Fig. l is a detail perspective view of the inside latchingmechanism, and Fig. 5

l 3 5 is a detail perspective view of one of the washers employed tohold the knob-spindles in place. Fig. 6 is a view illustrating amodified means of coupling together the knobspindles.

Referring to the drawings, the numeral 1 indicates the latch-casing, and2 the sliding latch arranged therein. The latch 2 consists of a shank orstem 3, having a beveled outer end 4, and at its inner end is forked orbifurcated to form two arms 5, the extremities of which are providedwith two lugs 6, that are adapted to be engaged by arms 7, carried by aboss 8, having a square aperture 9, through which passes the squaredspindle of the outer 5o knob, as hereinafter explained. A partition 10is fixed in the latch-casing and is provided with lugs or projections11, over which are disposed the ends of coiled springs 12, the otherends of which are disposed over corresponding lugs or projections13,for1ned on the rearside of the head 4 of the latch. The latchcasingis mortised in the edge of the door-stile in the usual manner, and thecoiled springs operate to force the latch outward into engagement withthe keeper, (not shown,) fixed in the door-casing, as usual. It will bemanifest that by turning the boss 8 in either direction one or the otherof the arms 7 will engage its corresponding lug 6 and retract the latchto permit of the door being opened.

Adapted to be secured to, the opposite sides of the door are twoescutcheon-plates, the numeral 14 indicating the inner and 15 the outerplate. Said plates are provided centrally with cylindrical hollowbosses, respectively indicated by the numerals 16 and 17, the inner endsof which are countersunk, as at 18, for the reception of frusto-conicalwasl ers 19, and said bosses are provided internally with radiallyextending recesses or sockets, respectively indicated by the numerals 20and 21, for the purpose hereinafter set forth. The outerescutcheon-plate is provided with inwardly-projecting hollow andinternally-threaded lugs 22, into which are adapted to be screwed bolts23, that pass through suitable perforations formed in the inner plate14, by which means said plates are secured to the opposite sides of thedoor.

Rotatably arranged in the boss of the innor plate is a knob-spindle 2 L,terminatingat its inner end in a squared shank 25. Formed in the end ofthe knob 26 is a recess 27, provided centrally with a cylindrical socket28. The knob-spindle is provided with a longi- 9o tudiual bore 29, thatcommunicates at one end with the socket 28 and at its opposite end isintercepted by atransverse bore 30, in which is arranged a sliding pin31. Seated in the recess 27 is a plunger 32, provided with aninwardly-projecting stem or shank 33, that is loosely fitted in thesocket 28. A coiled spring 34. is disposed in the socket 28, beneath thestem or shank 33 and operates to force the plunger 32 outward. A rod 35passes cen- 10o trally through the plunger and its shank or stem andthrough the bore 29 and is preat its inner end is provided with aneccentric wrist-pin 39, that engages a transverse slot 40, formed in thepin 31. When the pin 31 is in engagement with the recess 20, as shown inFig. 1 of the drawings, it will be evident that the knob 26 cannot beturned and the latch can then only be retracted by means of 3 the pin41, secured to the latch mechanism in a usual and well-known manner.

To un-.

lock the inner knob, so as to permit of its. being turned, the plunger32 must first be pushed in to release the head 38 of the rod 35, and thelatter is then given a partial rotation to cause the wrist-pin 39 toretract the pin 31, whereupon the knob is free to be turned.

Rotatably arranged in the boss 17 of the i outer plate is a knob 42,provided with a% squared spindle 43, that passes through the 1 squareaperture in the boss 8 and is fitted over the squared inner end of thespindle 25. It will be apparent that by the construction described thetwo knobs cannot be turned independently ofone another and that wheneither of them is turned the boss 8 will be rotated and the arms 7 willbe actuated to retract the latch. The frusto-conical washers 19 aredisposed in the countersunk portions 18 of the bosses 16 and 17, asbefore stated, and are fixed on the spindles 25 and 43 by means of pins44, that pass transversely through said spindles and lie in grooves 45,formed in the inner faces of the washers.

Formed internally in the outer boss 17 isa radial socket 21, and adaptedto register with said socket is a cylindrical slot 45, formedtransversely in the spindle 43. Arranged to slide in the slot 45 is alocking-pin 46, provided with a transverse slot 47, which is engaged bya wrist-pin 48, formed eccentrically on the inner end of a rod 49. Therod 49 is rotatably mounted in a sleeve 50, which is fitted in the innerend of a tubular casing 51, which in turn is fitted centrally in theknob 42, and said casing and sleeve are prevented from turning by aset-screw 52, inserted through the side of the knob. The outer end ofthe rod 49 is formed with a head 53, that is provided on its oppositesides with nicks or notches 54, that are adapted to be engaged by prongs55, formed on the end of a fiat key 56. The tubular casing 51 isprovided internally with lugs or projections 57, that are, arranged toregister with correspondingly-shaped notches 58, formed in the sides ofthe key to permit the latter to be rotated. It will be obvious that saidlugs or projections 57 will operate to prevent the use of any but aproperly-constructed key.

The operation of my improved lock and latch is as follows: Let it beassumed that it is desired to lock the door, so that a person having theproper key may unlock the door from the outside. Then the pin 31 iswithdrawn from the socket 20 in the manner before described and the pin46 is shotinto the socket 21. The door can then only be opened from theinside by operating the bolt 41, it being impossible to turn the knob26. By inserting the key 56 in the outer knob 42 and causing its prongs55 to engage the notches 54 in the rod 49, then by rotating the key thepin 46 will be retracted from the socket 21, whereupon the knob 42 canbe turned to withdraw the latch 2. If, however, it be desired to lockthe door, so that it cannot be unlocked from the outside, then the bolt31 is shot into its socket 20 in the manner before described, wherebyneither of the knobs can be turned.

Instead of coupling the two knob-spindles 25 and 43 together in themanner before described said spindles may be coupled together as shownin Fig. 6, wherein the knob spindles 25 and 43 are arranged to slidelongitudinally alongside each other and through a collar 59, fastened toone of said spindles, said collar being provided with a square apertureof sufficient size to receive both of said spindles and also beingsquared externally to fit the square aperture 9 in the boss 8. Thecollar 59 is preferably beveled upon its opposite sides to enable thespindles to be inserted at a slight angle in the event of the mortiseformed for its reception being not formed accurately at a right angle.

Having described my invention, what I claim is- 1. In a combined lockand latch, the combination with the reciprocating latch, of rotatablespindles for retracting the latch, said spindles being coupled togetherto cause them to rotate in unison, knobs for turning the spindles,locking pins slidably arranged transversely in both the knob-spindlesand locking mechanism arranged in said knobspindles and adapted to beoperated by a key inserted in one of the knob-spindles and by arotatable rod or stem in the other knobspindle to project the pins intoradial sockets formed in the fixed knob-spindle casing, substantially asdescribed.

2. In a combined lock and latch, the combination with the reciprocatinglatch, of hollow bosses attached to the opposite sides of the door andeach provided internally with a radial socket, knob-spindles arranged insaid bosses and coupled together to rotate in unison, said. spindlesoperating when turned to retract the latch, locking-pins slidablyarranged transversely in the knob-spindles, and locking mechanismarranged in said knob-spindles and adapted to be operated by a keyinserted in one of the knob-spindles and by a rotatable rod or stem inthe other knob-spindle to project said pinsinto the radial sockets inthe bosses to lock the knob- ITO spindles against turning, substantiallyas described.

3. In a combined lock and latch, the combination with the reciprocatinglatch,ofplates attached to the opposite sides of the door and eachprovided with a hollow boss, said bosses being each provided internallywith a radial socket, knob-spindles arranged in said bosses andoperating when turned. to retract the.

latch, transverse lockingpins slidably arranged in the knob-spindles andeach provided with a transverse slot, rods rotatably arranged centrallyin the knob-spindles and provided at their inner ends with wrist-pinsengaging said transverse slots and operating when the rods are rotatedto move the locking-pins in and out of the radial sockets, substantiallyas described.

4. In a combined lock and latch, the combination with the reciprocatinglatch, of plates attached to the opposite sides of the door and eachprovided with a hollow boss, said bosses being each provided internallywith a radial socket, kn ob-spindles arranged in said bosses andoperating when turned to retract the latch, transverse locking-pinsslidably arranged in the knob-spindles and each provided with atransverse slot, rods rotatably arranged centrally in the knob-spindlesand provided at their inner ends with wrist-pins engaging saidtransverse slots and operating when the rods are rotated to move thelocking-pins in and out of the radial sockets, and means forindependently rotating said rods, substantially as described.

5. In a combined lock and latch, the combination with thereeiprocatinglatch, of plates attached to the opposite sides of the doorand each provided with a hollow boss, said bosses being countersunk attheir inner ends and each provided internally with a radial socket,knob-spindles arranged in said bosses and operating when turned toretract the latch, transverse locking-pins slidably arranged in theknob-spindles and each provided with a transverse slot, rods rotatablyarranged centrally in the knob-spindles and provided at their inner endswith wrist-pins engaging said transverse slots and operating when therods are rotated to move the locking-pins in and out of the radialsockets, and frusto-conical washers disposed in the countersunk portionsof the bosses and fixed on the knob-spindles, substantially asdescribed.

(5. In a combined lock and latch, the combination with the reciprocatinglatch,of plates attached to the opposite sides of the door and eachprovided with a hollow boss, said bosses beingeach provided internallywith a radial socket, knob-spindles arranged in said bosses andoperating when turned to retract the latch, said knobspindles beingconnected at their inner ends to rotate in unison, transverselocking-pins slidably arranged in the knob-spin dles and each providedwith a transverse slot, and rods rotatably arranged centrally in theknob-spindles and provided at their inner ends with wrist-pins engagingsaid transverse slots and operating when the rods are rotated to movethe locking-pins in and out of the radial sockets, substantially asdescribed.

7. In a combined lock and latch,the con1- bination With'thereciprocatinglatchpf plates attached to the opposite sides of the doorand each provided with a hollow boss, said bosses being each providedinternally with a radial socket, knob-spindles arranged in said bossesand operating when turned to retract the latch, transverse locking pinsslidably arranged in the knob-spindles and each provided withatransverse slot, rods rotatably arranged in the knob-spindles andprovided at their inner ends with wrist-pins engaging said transverseslots and operating when the rods are turned to move the locking-pins inand out of the radial sockets, and means for normally holding said rodsagainst rotation, sub stantially as described.

8. In a combined lock and latch, the combination with the reciprocatinglatch, of a plate attached to the outer side of the door and providedwith a hollow boss having an internal radial socket, a knob-spindlearranged in said boss and operating when turned to retract the latch, atransverse lockingpin slidably arranged in the knob-spindle and having atransverse slot, a tubular casing fitted centrally in the knob-spindleand provided with internal lugs or projections, a sleeve fixed in theinner end of said casing, a rod rotatably arranged in said sleeve andprovided at one end with an eccentric wristpin engaging the slot in thelocking-pin to move the latter in and out of the radial socket, andprovided at its opposite end With a head having notches formed in itsopposite sides and adapted to be engaged by a key to turn the rod,substantially as described.

9. In a combined lock and latch, the com bination with the reciprocatinglatch, of a plate attached to the inner side of the door and providedwith a hollow boss having an internal radial socket, a knob-spindlearranged in said boss and operating when turned to retract the latch, atransverse locking-pin slidably arranged in the knob-spindle and havinga transverse slot, a rod rotat-ably arranged in the kn ob-spindle andprovided at one end with an eccentric wrist-pin engaging the slot in thelocking-pin to move the latter in and out of the radial socket in theboss, and provided at its other end with a head by means of which it maybe turned, substantially as described.

10. In a combined lock and latch, the combination with the reciprocatinglatch, of a plate attached to the inner side of the door and providedwith a hollow boss having an internal radial socket, a knob-spindlearranged in said boss and operating when turned to retract the latch, atransverse locking-pin slidably arranged in the knob-spindle and havinga transverse slot, a rod rotatably arranged in the knob-spindle andprovided at one end with an eccentric wrist-pin engaging the slot in thelocking-pin to move the latter in and out of the radial socket in the 5boss and provided at its other end with a flat head by means of which itmay be turned, a 1 hollow plunger surrounding the outer end of said rodand provided with a recessed head adapted to inclose the headed end ofthe rod,

and a spring for forcing said plunger out [6 ward, substantially asdescribed.

In testimony whereof I have hereunto set my hand in presence of twosubscribing witnesses. p

A MARCUS O. PATRICK; Witnesses:

HENRY F. BUTLER, R. B'. AnBERTsoN.

